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1.A triangle is formed by the line connecting the midpoints of two adjacent sides of a rectangle. Find the area of this triangle if the area of the rectangle is 8 square units. why ? 2. when freezing, water increases its volume by 1/11. By what part of its volume will ice decrease when it melts and turns back... 顯示更多 1.A triangle is formed by the line connecting the midpoints of two adjacent sides of a rectangle. Find the area of this triangle if the area of the rectangle is 8 square units. why ?


2. when freezing, water increases its volume by 1/11. By what part of its volume will ice decrease when it melts and turns back into water? why?



3, in a children's game, you count from 1 to 100 and clap every time that you find either a multiple of 3 or a number ending with 3. How may times are you suppose to clap ? why ?
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